Mac OS X 10.11 El Capitan
The most recent version of Microsoft Office compatible with is Microsoft Office 2016 . Modern versions such as Office 2019, 2021, and the current Microsoft 365 apps generally require much newer versions of macOS (typically the three most recent versions). Key Compatibility & Download Information
Important:
You cannot install Office 2024, Office 2021, or the new "Microsoft 365" app on El Capitan. You need the legacy installer.
What Apps Are Included in the Latest El Capitan Version?
To download Microsoft Office for Mac OS X El Capitan (10.11.6), the latest fully compatible version is Office 2016